Three mental health experts look at 10 volunteers taking part in various challenges before trying to decide which of them has a history of mental health problems.

Episode Viewers and Ratings

Season 46 Episode 1 of Horizon resulted in a 0.00 rating in the 18-49 demographic.

Horizon Season 46 Episodes...

• s46e01 - How Mad Are You?
• s46e02 - How Mad Are You?
• s46e03 - Jimmy's GM Food Fight
• s46e04 - Do You Know What Time It Is?
• s46e05 - Allergy Planet
• s46e06 - Where's My Robot

Horizon Show Summary

Horizon is BBC Two's flagship 50-minute science documentary series.

Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia.

In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand.

In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

In September 2014 it celebrated its 50th anniversary and it continues to enjoy outstanding critical acclaim.